According to the source material, the luteinising hormone (LH) is responsible for both inducing ovulation and the subsequent development and maintenance of the corpus luteum . During the middle of the menstrual cycle, a peak level of LH (known as the LH surge) induces the rupture of the Graafian follicle to release the ovum . Following this, the remnants of the ruptured follicle transform into the corpus luteum under the influence of LH .